It took a year to build the Empire State Building, and 5 years to build the Hoover Dam yet current estimates for the Francis Scott Key bridge rebuild are near 10 years. Why is this? Have we regressed?
In: Engineering
On top of what other people have said, buildings/bridges/dams/etc are much more complex than they used to be. Both the design and construction of them. That additional complexity takes a lot of additional time to build.
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